The hotel extension is broken. Are the other rooms still available?

Can't use it. Extension downtime means that the main engine is down, and the main engine controls all extensions. One extension downtime means that all extensions are down, so the hotel extension downtime cannot be used in other rooms. The switchboard and extension should be called virtual business telephone. When called, each phone has its own number. When you make a phone call, you need to dial the horn before you can exhale. The number displayed is the host number. For internal use, when the extension is called, just dial the last 4 digits. Inside the switch, it is regarded as a group, and all the expenses generated by each extension are recorded on the host number.